三相电流型光伏交流模块的研究  

Research on Three-phase Photovoltaic Module Based on Current-source Inverter

作　　者：周江伟[1] 杜春水[1] 张承慧[1] 陈阿莲[1] 

机构地区：[1]山东大学,控制科学与工程学院,山东济南250061

出　　处：《电力电子技术》2013年第10期33-34,51,共3页Power Electronics

基　　金：国家自然科学青年基金(51007049);山东省自主创新重大科技专项计划(2006zz11);济南市高校院所自主创新项目(201202091)~~

摘　　要：为提高光伏(PV)并网逆变器的寿命,研究了一种三相电流型光伏交流模块。分析了电流型逆变器的工作原理,结合太阳能光伏发电系统的要求,设计功率跟踪外环和电网电压定向的电流矢量内环的双环控制系统,并采用最小开关频率电流型正弦脉宽调制(SPWM)策略,改善了输出波形质量和系统效率。根据系统模型仿真优化参数,设计并搭建了一台3kVA的实验样机,仿真和实验结果验证了控制方案的正确性和可行性。A photovoltaic （PV） alternating current module based on three-phase current source inverter is designed to achieve long-life.The principle of the current source inverter is analyzed.According to the demands of the photovoltaic generation system, a double-loop control system is designed, which included the power outer loop and the grid-voltage- oriented current vector control loop.To improve the output waveforms quality and the system efficiency,a minimum switching-frequency sinusoidal pulse width modulation（SPWM） strategy is adopted.A 3 kVA experimental prototype is completed and the simulation and experimental results verify the correctness and validity of the theoretic analysis.

关 键 词：逆变器 光伏交流模块 正弦脉宽调制 

分 类 号：TM464[电气工程—电器]